Is there ever a situation where we want to create a number using `new Number()`?

JavaScript
1

Referring to this:
Number() constructor - JavaScript | MDN (mozilla.org)
Would appreciate an example.

Similarly with strings where it reads “you rarely want to use the String constructor at all”:
String() constructor - JavaScript | MDN (mozilla.org)
So is it “rarely” or “at all”?

2

Strings (or numbers, or booleans etc) are primitives.

When you apply a method to them, like "hello".toUpperCase(), JS puts the string in an object (it “boxes” it), applies the method, then returns a new primitive string.

If you want that object, then that’s what new String is creating. If you want direct access to the underlying way JS handles the built-in objects it uses to do everything, then you might use the constructors. They are available, it’s just very unlikely you will be in a position where you need them.

2 Likes
3

Thanks!

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